Combustion-chamber for steam-boilers



(No Model.)

J. SCOTT.

COMBUSTION GHAMBERIOR STEAM BOILERS.

No. 270,490. Patented Jan.9, 1883.

v a INVENTOR ATTORNEYS.

LII

UNITED STATES PATENT rica JAMES SCOTT, OF PITTSBURG, PENNSYLVANIA.

COMBUSTION-CHAMBER FOR STEAM-BOlLERS.

SPECIFICATION forming part of Letters Patent No. 270,490, dated January 9, 1883.

Application filed November 11, 1882. (N model.)

To all whom it may concern.-

Be it known that I, JAMES SCOTT, of Pittsburg, in the county of Allegheny and Stateof Pennsylvania, have invented a new and Improved Oombustion-Chamber for Steam-Boilers, of which the followingis a full, clear, and exact description.

The object of my invention is to construct a chamber for utilizing the gases from blast-furnaces in the production of steam, so as to require no solid fuel in the boiler-furnaces.

To that end my invention consists in a gascombustion chamber provided with air-heating fines and spaces in which the airis heated, and

through which it is supplied to the chamber for effecting the perfect combustion of the gases, as hereinafter described and claimed.

teference is to be had to'the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical section ofmy improved com bustion-chamber longittnlinally of the boilers. Fig. 2 is a vertical section on line 00 w of Fig. 1. Fig. 3 is a horizontal section on hue y y, and Fig. 4 a similar view on line 22', of Fig. 1.

A A are the side walls, and B B the end walls, of the chamber, constructed of brick. U C are the boilers, supported above the chamber by the end walls. At the bottom of the chamber are a series of parallel air-passages, a, formed by transverse partitions I), covered by tiles 0. These. passages connectalternately at their ends, so as to form acontinuous passage from an inlet, d, formed in one end wall B, to an air chamber, 6, formed by a wall,f, and the opposite end Wall E, this chamber being arched, as shown. In the side walls, A, there are longitudinal passages g, connecting gases.

with air-chamber e, and also with a series of hollow arches, it, that extend across the combustion-chamber. These arches it pass near the under side of the boilers, and are perl'orated, as shown at 2', to allow escape of the air into the chamber. The air-chamber 0 also has apertures t" for the same purposes. In one end wall B is an inlet, is, for gases, and at the opposite end the products of combustion pass out over the top ofthe air-chamber e to a suitable tlue or chimney.

In operation, the combustion-chamber is supplied with the gases from a blast-furnace using either coke, coal, or charcoal, and as soon as the chamber becomes heated air is supplied at the inlet d, a blower being employed to force the air. The air passing through thepassages a to chamber 0 and arches It becomes highly heated, and is discharged by openings 't'and mingles with the gases in the best possible conditions for promoting combustion of the in this manner the heated gases are utilized tothe greatest extent possible, and no solid fuel is required to maintain combustion.

Havingthus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination and arrangement, substantially as described, of the air-passages a and' hollow arches h, with the combustionchamber for burning gases.

2. The air-chamber e, hollow arches /L, and air-passages lormed by partitions b and tiling 0, combined with the walls A B of the com bustiou-chamber for steam-boilers, substantially as described.

JAMES SCOTT. Vitnesses J NO. T. Fox, J. B. RICHARDS. 

